Mary Fields had to be tough as nails to thrive in the untamed American midwest as the first Black woman to be a star-route mail carrier. 

https://www.britannica.com/biography/Mary-Fields https://www.youtube.com/watch?v=rMxSTtRBa-o https://www.youtube.com/watch?v=khhIwpxrtFk https://www.history.com/news/meet-stagecoach-mary-the-daring-black-pioneer-who-protected-wild-west-stagecoaches https://en.wikipedia.org/wiki/Mary_Fields